{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "arguments": ["Effect", "Treatment.Freq", "Subject.Population", "Subject.Gender", "Treatment.Duration", "Treatment.Disorder", "Subject.Age", "Treatment.Drug", "Treatment.Route", "Treatment", "Subject.Disorder", "Treatment.Time_elapsed", "Subject"]}], "input": "We present a case of stroke after PPA ingestion that occurred 4 months after the recall in an 8-year-old boy on chronic peritoneal dialysis."}
{"potential therapeutic event": []}